About the efficiency of the duodenal drainage with the double balloon tube technique using polyethylene glycol as duodenal marker.

Using polyethylene glycol (PEG) as a duodenal marker substance, we studied the efficiency of the duodenal drainage with the double balloon tube technique employing three various tubes: a) the three-lumen double balloon tube according to Bartelheimer, b) a modified double balloon tube with more valid preconditions for the combination of duodenal marker and double balloon tube technique, and c) this modified tube after removal of the distal balloon. The results with this valid marker technique represent the first experimental proof that the duodenal juice can be collected in an approximately quantitative way by the described double balloon tube techniques. They therefore confirm the importance of these tubes for all those studies in which a quantitative drainage is desired as much as possible.